function init() {
    // quit if this function has already been called
    if (arguments.callee.done) return;

    // flag this function so we don't do the same thing twice
    arguments.callee.done = true;

    // kill the timer
    if (_timer) clearInterval(_timer);
		
	// functions to be called onload of page	
	loadSignUpTips();

}; // end init();

/* for Mozilla/Opera9 */
if (document.addEventListener) {
    document.addEventListener("DOMContentLoaded", init, false);
}

/* for Internet Explorer */
/*@cc_on @*/
/*@if (@_win32)
    document.write("<script id=__ie_onload defer src=javascript:void(0)><\/script>");
    var script = document.getElementById("__ie_onload");
    script.onreadystatechange = function() {
        if (this.readyState == "complete") {
            init(); // call the onload handler
        }
    };
/*@end @*/

/* for Safari */
if (/WebKit/i.test(navigator.userAgent)) { // sniff
    var _timer = setInterval(function() {
        if (/loaded|complete/.test(document.readyState)) {
            init(); // call the onload handler
        }
    }, 10);
}

/* for other browsers */
window.onload = init;

function loadSignUpTips() {
	// show tips - SIGN UP PAGES
	Event.observe('username','focus',function(e){showTip('username-tip')});
	Event.observe('pwd1','focus',function(e){showTip('pwd1-tip')});
	Event.observe('pwd2','focus',function(e){showTip('pwd2-tip')});
	Event.observe('email','focus',function(e){showTip('email-tip')});
	Event.observe('zip','focus',function(e){showTip('zip-tip')});

	//hide tips - SIGN UP PAGES
	Event.observe('username','blur',function(e){hideTip('username-tip')});
	Event.observe('pwd1','blur',function(e){hideTip('pwd1-tip')});
	Event.observe('pwd2','blur',function(e){hideTip('pwd2-tip')});
	Event.observe('email','blur',function(e){hideTip('email-tip')});
	Event.observe('zip','blur',function(e){hideTip('zip-tip')});
}